forked from mirrors/gecko-dev
335 lines
8.6 KiB
C++
335 lines
8.6 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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******************************************************************************
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* Copyright (C) 1999-2015, International Business Machines Corporation and
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* others. All Rights Reserved.
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******************************************************************************
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* Date Name Description
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* 10/22/99 alan Creation.
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**********************************************************************
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*/
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#include "uvectr32.h"
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#include "cmemory.h"
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#include "putilimp.h"
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U_NAMESPACE_BEGIN
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#define DEFAULT_CAPACITY 8
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/*
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* Constants for hinting whether a key is an integer
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* or a pointer. If a hint bit is zero, then the associated
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* token is assumed to be an integer. This is needed for iSeries
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*/
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UVector32)
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UVector32::UVector32(UErrorCode &status) :
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count(0),
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capacity(0),
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maxCapacity(0),
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elements(NULL)
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{
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_init(DEFAULT_CAPACITY, status);
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}
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UVector32::UVector32(int32_t initialCapacity, UErrorCode &status) :
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count(0),
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capacity(0),
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maxCapacity(0),
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elements(0)
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{
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_init(initialCapacity, status);
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}
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void UVector32::_init(int32_t initialCapacity, UErrorCode &status) {
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// Fix bogus initialCapacity values; avoid malloc(0)
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if (initialCapacity < 1) {
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initialCapacity = DEFAULT_CAPACITY;
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}
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if (maxCapacity>0 && maxCapacity<initialCapacity) {
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initialCapacity = maxCapacity;
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}
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if (initialCapacity > (int32_t)(INT32_MAX / sizeof(int32_t))) {
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initialCapacity = uprv_min(DEFAULT_CAPACITY, maxCapacity);
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}
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elements = (int32_t *)uprv_malloc(sizeof(int32_t)*initialCapacity);
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if (elements == 0) {
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status = U_MEMORY_ALLOCATION_ERROR;
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} else {
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capacity = initialCapacity;
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}
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}
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UVector32::~UVector32() {
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uprv_free(elements);
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elements = 0;
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}
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/**
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* Assign this object to another (make this a copy of 'other').
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*/
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void UVector32::assign(const UVector32& other, UErrorCode &ec) {
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if (ensureCapacity(other.count, ec)) {
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setSize(other.count);
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for (int32_t i=0; i<other.count; ++i) {
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elements[i] = other.elements[i];
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}
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}
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}
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UBool UVector32::operator==(const UVector32& other) {
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int32_t i;
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if (count != other.count) return FALSE;
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for (i=0; i<count; ++i) {
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if (elements[i] != other.elements[i]) {
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return FALSE;
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}
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}
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return TRUE;
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}
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void UVector32::setElementAt(int32_t elem, int32_t index) {
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if (0 <= index && index < count) {
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elements[index] = elem;
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}
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/* else index out of range */
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}
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void UVector32::insertElementAt(int32_t elem, int32_t index, UErrorCode &status) {
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// must have 0 <= index <= count
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if (0 <= index && index <= count && ensureCapacity(count + 1, status)) {
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for (int32_t i=count; i>index; --i) {
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elements[i] = elements[i-1];
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}
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elements[index] = elem;
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++count;
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}
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/* else index out of range */
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}
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UBool UVector32::containsAll(const UVector32& other) const {
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for (int32_t i=0; i<other.size(); ++i) {
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if (indexOf(other.elements[i]) < 0) {
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return FALSE;
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}
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}
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return TRUE;
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}
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UBool UVector32::containsNone(const UVector32& other) const {
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for (int32_t i=0; i<other.size(); ++i) {
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if (indexOf(other.elements[i]) >= 0) {
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return FALSE;
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}
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}
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return TRUE;
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}
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UBool UVector32::removeAll(const UVector32& other) {
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UBool changed = FALSE;
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for (int32_t i=0; i<other.size(); ++i) {
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int32_t j = indexOf(other.elements[i]);
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if (j >= 0) {
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removeElementAt(j);
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changed = TRUE;
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}
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}
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return changed;
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}
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UBool UVector32::retainAll(const UVector32& other) {
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UBool changed = FALSE;
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for (int32_t j=size()-1; j>=0; --j) {
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int32_t i = other.indexOf(elements[j]);
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if (i < 0) {
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removeElementAt(j);
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changed = TRUE;
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}
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}
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return changed;
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}
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void UVector32::removeElementAt(int32_t index) {
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if (index >= 0) {
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for (int32_t i=index; i<count-1; ++i) {
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elements[i] = elements[i+1];
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}
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--count;
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}
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}
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void UVector32::removeAllElements(void) {
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count = 0;
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}
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UBool UVector32::equals(const UVector32 &other) const {
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int i;
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if (this->count != other.count) {
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return FALSE;
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}
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for (i=0; i<count; i++) {
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if (elements[i] != other.elements[i]) {
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return FALSE;
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}
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}
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return TRUE;
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}
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int32_t UVector32::indexOf(int32_t key, int32_t startIndex) const {
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int32_t i;
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for (i=startIndex; i<count; ++i) {
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if (key == elements[i]) {
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return i;
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}
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}
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return -1;
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}
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UBool UVector32::expandCapacity(int32_t minimumCapacity, UErrorCode &status) {
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if (U_FAILURE(status)) {
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return FALSE;
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}
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if (minimumCapacity < 0) {
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return FALSE;
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}
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if (capacity >= minimumCapacity) {
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return TRUE;
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}
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if (maxCapacity>0 && minimumCapacity>maxCapacity) {
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status = U_BUFFER_OVERFLOW_ERROR;
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return FALSE;
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}
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if (capacity > (INT32_MAX - 1) / 2) { // integer overflow check
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return FALSE;
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}
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int32_t newCap = capacity * 2;
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if (newCap < minimumCapacity) {
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newCap = minimumCapacity;
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}
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if (maxCapacity > 0 && newCap > maxCapacity) {
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newCap = maxCapacity;
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}
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if (newCap > (int32_t)(INT32_MAX / sizeof(int32_t))) { // integer overflow check
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// We keep the original memory contents on bad minimumCapacity/maxCapacity.
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return FALSE;
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}
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int32_t* newElems = (int32_t *)uprv_realloc(elements, sizeof(int32_t)*newCap);
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if (newElems == NULL) {
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// We keep the original contents on the memory failure on realloc.
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status = U_MEMORY_ALLOCATION_ERROR;
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return FALSE;
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}
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elements = newElems;
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capacity = newCap;
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return TRUE;
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}
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void UVector32::setMaxCapacity(int32_t limit) {
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U_ASSERT(limit >= 0);
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if (limit < 0) {
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limit = 0;
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}
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if (limit > (int32_t)(INT32_MAX / sizeof(int32_t))) { // integer overflow check for realloc
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// Something is very wrong, don't realloc, leave capacity and maxCapacity unchanged
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return;
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}
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maxCapacity = limit;
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if (capacity <= maxCapacity || maxCapacity == 0) {
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// Current capacity is within the new limit.
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return;
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}
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// New maximum capacity is smaller than the current size.
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// Realloc the storage to the new, smaller size.
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int32_t* newElems = (int32_t *)uprv_realloc(elements, sizeof(int32_t)*maxCapacity);
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if (newElems == NULL) {
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// Realloc to smaller failed.
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// Just keep what we had. No need to call it a failure.
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return;
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}
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elements = newElems;
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capacity = maxCapacity;
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if (count > capacity) {
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count = capacity;
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}
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}
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/**
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* Change the size of this vector as follows: If newSize is smaller,
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* then truncate the array, possibly deleting held elements for i >=
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* newSize. If newSize is larger, grow the array, filling in new
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* slots with NULL.
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*/
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void UVector32::setSize(int32_t newSize) {
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int32_t i;
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if (newSize < 0) {
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return;
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}
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if (newSize > count) {
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UErrorCode ec = U_ZERO_ERROR;
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if (!ensureCapacity(newSize, ec)) {
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return;
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}
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for (i=count; i<newSize; ++i) {
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elements[i] = 0;
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}
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}
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count = newSize;
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}
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/**
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* Insert the given integer into this vector at its sorted position
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* as defined by 'compare'. The current elements are assumed to
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* be sorted already.
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*/
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void UVector32::sortedInsert(int32_t tok, UErrorCode& ec) {
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// Perform a binary search for the location to insert tok at. Tok
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// will be inserted between two elements a and b such that a <=
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// tok && tok < b, where there is a 'virtual' elements[-1] always
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// less than tok and a 'virtual' elements[count] always greater
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// than tok.
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int32_t min = 0, max = count;
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while (min != max) {
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int32_t probe = (min + max) / 2;
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//int8_t c = (*compare)(elements[probe], tok);
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//if (c > 0) {
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if (elements[probe] > tok) {
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max = probe;
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} else {
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// assert(c <= 0);
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min = probe + 1;
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}
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}
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if (ensureCapacity(count + 1, ec)) {
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for (int32_t i=count; i>min; --i) {
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elements[i] = elements[i-1];
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}
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elements[min] = tok;
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++count;
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}
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}
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U_NAMESPACE_END
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